The common practice of adding oil, antifreeze while traveling or filling up at a gas station in another area sometimes leads to disastrous consequences. For example, you have to call roadside assistance, because the engine has stalled. Or contact the service to find out the reason for the overheating of the internal combustion engine or interruptions in its operation, and this raises the question: is it possible to mix working fluids from different manufacturers and brands?

Is it possible to mix motor oils?

Manufacturers advise that it is permissible to add only the oil that was originally used.

Reality shows the opposite – in a critical situation, engine oils can mix, because only timely topping up will save the engine from damage.
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Mixing characteristics:

  1. When the oil level drops critically, the viscosity of the oil added to the engine does not matter (it is more important to maintain the functionality of the unit).
  2. The same applies to the quality class, indicated by the symbols SL, SM, SN. The further the second letter is from the beginning of the alphabet, the lower the risk of engine damage.
  3. There is no difference between synthetics, semi-synthetics and mineral oil if there is no other option.
  4. In winter, as long as the car is well warmed up, any summer brand will do, but it should be borne in mind that after cooling the car may not start due to the oil being too thick. Then there will be only one option left – roadside assistance in Sofia, who will arrive on time. They will take the car to a service station for diagnostics.

What happens if you add "other" antifreeze?

More information:

The composition of each coolant includes 80% a mixture of distilled water and ethylene glycol.

The remaining 20% of each manufacturer's volume is occupied by various additives, for example to compensate for the oxidizing effects of water.

Mixing different types of antifreeze can theoretically lead to chemical reactions and the formation of sediment, which will begin to actively clog the radiator and pipes.

It is advisable to drain the “mixture”, flush the system and refill it with the original antifreeze. In addition, find out the reason for the sharp drop in the liquid level and eliminate the leak. If you do not pay attention to this, there is a risk of poor engine cooling. And one day an emergency evacuation will be needed so that the already overheated unit does not collapse.

What are the dangers? to put the wrong fuel in your car?

Is it possible to fill the tank with different types of fuel? The first thing you need to know is that only diesel fuel and gasoline are clearly incompatible. You will not be able to drive a diesel car if you pour gasoline into the tank, even of the highest quality. And vice versa. Otherwise, there are practically no restrictions. In urban conditions, it is easy to choose a gas station where you “like” the quality of the fuel and always refuel there. On the highway, you will have to buy what they sell you.

Features:

  • Due to the nature of production, gasoline always has one octane number – 80. Higher values are obtained by adding various additives.
  • Mixing fuel with different octane numbers has no consequences, except for changing the characteristics of an engine tuned to a certain value.
  • Diesel fuel can also be mixed, for example, summer fuel with winter fuel and vice versa, but it should be borne in mind that in winter this can lead to freezing of the fuel system.
  • If there is no other option, fill up with fuel suitable for the engine and continue driving. The differences between gas stations of different brands of chains are minimal, perhaps only relating to the type of additives.

No one is safe from getting into such a situation. If you notice this in your car, you better stop and call roadside assistance from Naydenovi Autofor a technical support team to come.

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